<PackageReference Include="BouncyCastle.Cryptography" Version="2.3.0" />

PrimaryUserId

using System; namespace Org.BouncyCastle.Bcpg.Sig { public class PrimaryUserId : SignatureSubpacket { private static byte[] BooleanToByteArray(bool val) { return new byte[1] { Convert.ToByte(val) }; } public PrimaryUserId(bool critical, bool isLongLength, byte[] data) : base(SignatureSubpacketTag.PrimaryUserId, critical, isLongLength, data) { } public PrimaryUserId(bool critical, bool isPrimaryUserId) : base(SignatureSubpacketTag.PrimaryUserId, critical, false, BooleanToByteArray(isPrimaryUserId)) { } public bool IsPrimaryUserId() { return data[0] != 0; } } }